Method and device for pulse rate detection
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United States of America Patent
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Mar 28, 2006
Grant Date -
Apr 3, 2003
app pub date -
Sep 26, 2002
filing date -
Sep 28, 2001
priority date (Note) -
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Abstract
Portable pulse rate detecting device for contact with human body tissue, including a light-emitting source for emitting radiant energy directed at through human body tissue; at least first and second light detectors for detecting intensity of radiant energy after propagation through human body tissue and for providing first and second input signals as a function of such propagation, a detecting device for providing a motion reference signal, and processing means for removing motion-related contributions from the first and second input signals and subtracting a calculated model based on the motion reference signal from each of the first and second input signals, wherein the processing means is also for removing measurement noise and residual non-modeled contributions from the first and second enhanced signals using a noise reduction algorithm.
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